Cap for a food or beverage container



FIG. 1 is a top, front, left perspective view of a cap for a food or beverage container showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a right side elevational view thereof.

The subject matter shown in broken line in FIGS. 2, 3, 5 and 6 represents unclaimed environmental structure which is shown for illustrative purposes and forms no part of the claimed design. 

The ornamental design for a cap for a food or beverage container, as shown and described. 